A NbTi SPLIT MAGNET DIRECTLY COOLED BY A CRYOCOOLER

被引：5

作者：

Masuyama, S. ^{[1
]}

Yamamoto, H. ^{[1
]}

Matsubara, Y. ^{[2
]}

机构：

[1] Nihon Univ, Coll Sci & Technol, 7-24-1 Narashinodai, Funabashi, Chiba 274, Japan

[2] Nihon Univ, Atom Energy Res Inst, Funabashi, Chiba 274, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

Computer simulation - Cooling - Cryogenics - Electric coils - Magnetic field effects - Niobium - Superconducting materials - Titanium;

D O I：

10.1109/77.233721

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The experiment on a single coil directly cooled by a G-M cryocooler has been done to develop a superconducting magnet with several tesla without using liquid helium. The sizes of the coil are outer diameter of 140mm, inner diameter of 30mm and thickness of 39mm. A multifilamentary NbTi wire was wound on a copper bobbin and impregnated in wax. By a simple computer simulation, the influence of the copper bobbin was investigated with respect to quench of the coil. The cooldown process and operating conditions were optimized. As a result, the maximum magnetic field of 6.3 T was obtained at 6 K. Then the stored energy and the overall current are 2.9kJ and 286A/mm2, respectively. The NbTi wire made full use of its performance as a superconducting conductor. It was indicated that the critical state of the superconductor at the operated temperature was realized satisfactory.

引用

页码：262 / 265

页数：4